Grinder.



Patented Mov. 6, |900.

J. WIACPHAIL.

No. 66mm.

4 Sheets--Sheet I..

(Na Modal.)

152062Z??? L fame@ Wav/Meal Patented Nov. 6, |900.

J. MACPHAIL. 'GBINDEI'L (Applhmtion MMM. 11. 1899.)

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(No. modela lu. emma. y mmm Nov. s, |900. .11. MACPHAIL. ERINDEB.

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No. @GLM-. Patented Nov. 6, i900.

J. IWACPHAIL.

GBINDER'.

(Application filed Mar. 11, 1899.)

(No Windel.) 4 Sheets-Sheat 4.

States rripnt Artnr ILLINOIS, ASSIGNOR TO THE PLANO MANUFACTURINGCOMPANY, OF CHICAGO, ILLINOIS.

GRINDER.

SPECIFICATION forming part of :Letters Patent No. 661,348, datedNovember e, 1906;

Application filed March 1l, 1899.

Be it known that I, JAMES MACPHAIL, a resident of Blue Island, in thecounty of Cook and State of Illinois, have invented certain new anduseful Improvements in Grinders, of which the following is aspecication.

My invention relates to grinders; and its object is to provide a grinderboth for harvester-knives and the like and for general purposes.

My grinder embodies a novel construction and operation as well as noveladjustments oi' parts.

In the drawings, Figure 1 is a plan view of my grinderor machine; Fig.2, a front elevation thereof; Fig. i5, a sectional elevation on line 3of Fig. 1; Fig. 4, asection on line 4 of Fig. 3; Fig. 5, a sideelevation of the machine; Fig. (i, a detail view of the cam-gear; Figs.7 and 8, det-ail views of the work-support used for general grindingpurposes; Fig. 9, a detail view of a portion of the base-plate of theholder-frame, and Fig. 10 a plan view of a grinder with a fly-wheelcooperating therewith and attached thereto.

The grinder has a base portion 1, provided with means of attachment to abull-wheel or other stationary base, which means comprise, preferably, apair of depending arms 2, having lugs 3. A rod or bar 4, screw-threadedat one end and having a hook 5 at the other end, passes through thebase 1. The hookis adapted to engage under the rim of a vbullwheel orthe edge of any other stationary base, while thelugs 2 engage on theother side of the rim. To clamp the parts together, a thumb-screw 6 onrod 4 is employed. Figs. 2 and 3 particularly show the attachment of thegrinder on the bull-wheel of a harvester, while Fig. 5 shows the grinderattached to a stationary board or other base 7, having holes to receivethe lugs 2, which set into the holes, while the hook 5 is adapted toengage over the edge ot' such board.

From the base rises a standard 9, which provides a bearing for atransverse stud 0r pintle 10, carrying a gear-wheel l1, operated by ahandle l2. On this stud is pivotally mounted an adjustablebell-crank-shaped frame or bracket l, having substantially right-:ulgledarms 14 and 15, the arm 14 being sel-a1 N. vauz. (No man.)

`extended downwardly and the arm 15 rear-x wardly. The arm 14 has a slot16 to receive the screw-bolt 17, passing through the standard or support9. The grinding-wheel frame comprises two arms or standards 18 and 19,preferably having a connecting-piece 20 and pivoted at their rear endsupon the stud 10. The forward ends of these arms have journals, in whichis mounted a shaft 2 l, carrying at its end adjacent to the gear-wheel11 a small pinion 22, meshing with such gearwheel, whereby the shaft 21is rotated by the gear-wheel 11. The grinding-wheel 23 is adapted togrind two adjacentcutting edges of a harvester-knife, and, as shown, itis for this purpose beveled from the center outward ly. This wheel issecurely fastened to a sleeve 24, which is removably secured to therotating shaft 21 by one or more cotters or pins 25 or the like passingthrough registering holes iu the sleeve and shaft, respectively. Thisconstruction provides a simple and ready means of attachment and permitsof the removal of one wheel and the insertion of another by simplyremoving the cotters and drawing the shaft out toward the right, Fig. 1.The arm 19 is extended rearwardly beyond Aits bearing on the stud 10 andis biturcated to form arms 26 and 27.

The arm 15 is provided with a slot to receive the short stud 28, onwhich a gearwheel 29 rotates. This gear-wheel has an eccentric or cam30, contacting the arms 26 and 27 and causing such. arms, andconsequently the grinding-wheel, to rock up and down as itis rotated.This gear-wheel 29 mesheswithin a pinion 31, aflixed to or made a partof the gear-wheel l1 or arranged in any other suitable way, so as to berotated by such gear-wheel 11. A thumb-nut 32 clamps the gear-wheelshaft 28 in the in-mesh position or in the out-of-mesh position otl itsgearwheel. The extreme end of the arm 15 is bent laterally to form anarm 3S, whose inner face has a rib or locating-tooth 34, similar to agear-tooth, and adapted to receive and lock the gear-wheel 2.-) andprevent its rotation when out of mesh. Around the stud l0, be-

tween the standards 9 and the arm 18, is arranged a sleeve 35, (see Fig.4,) around which is a coiled spring .'36, abutting at one end ICOestelle against a lug 36a on the standard and at the other end beneaththe cross-piece 2O of the grinding-wheel frame. The object of thisspring is to carry the weight of this frame and relieve the camtherefrom.

The holder for clamping the work and presenting it to the grinding-wheelcomprises a base-plate 37, having a slot 38 to receive a screw-bolt 39,passing through the base 1, whereby the plate 37 may be adjustedforwardly and backwardly. This base-plate has upwardly-extending lugs orarms 40,0n which is pivotally mounted the holder-frame 41 through meansof the depending arms 42 and 43 and the bearing-pins 44. The arm 43 iscarried below its pivotal point to form an eX- tended end 45, againstwhich bears an adjusting-screw 46, whereby the pivotal movement of theframe 41 on the plate 37 may be limited.

The holder-frame has a pair of rearwardlyturned fingers 47 and 48 andone or more oppositely-turned fingers or rests 49. The frame 41 has anarm orlug 50, havinga screw-threaded hole to receive the screw-threadedend of a clamp 51, which is, in fact, a combined clamp and a handle,inasmuch asl it is grasped by the hand, and after clamping the knife-baris used to direct and hold the knife-sections against thegrinding-wheel. The frame 41 has a substantially horizontal flat portion52, provided with any desired number of holes located in differentpositions and adapted to receive a pin 53, such as an ordinarycotterpin, against which the knife-bar 54 (a portion of which is shown)is caused to bear when the clamp 51 is screwed inwardly. This knifebarfits between the fingers 47 and 48 on the one side and the finger 49 andclam p 51 on the other side.

In Fig. 10 is shown a machine with a coperating fly-wheel 55, having ashaft 56 journaled in an extension of the arm 15 and carrying a smallpinion 57, meshing with the gear-wheel 11. /Vhile this fly-wheel may bedispensed with its use assures a smoothness and uniformity of movement,and, furthermore, the peculiar arrangement of such wheel away from thedrive-gear allows of a high speed to be imparted to such wheel, whichassists the operator and facilitates the grinding, besides rendering themotion continuous.

In Figs. 7 and 8 is shown a work-support, preferably of metal, andcomprising a fiat portion 58, having depending arms 59 and 60. Thissupport is adapted to be securely clamped in the same place as theknife-bar,

and to this end the arm 59 has a horizontal slot 61, which is receivedby the finger 49, while the arm 60 has a screw-threaded hole 62,received by the clamp. The flat portion 58 is preferably hollowed out at63 to accommodate a differentsize of grinding-wheel used for generalgrinding.

My machine, being constructed as hereinbefore set forth, operates asfollows: The adjustable gear-wheel 29 being in mesh and the Y gear-wheel11 being turned, the pinion 22 is rotated and the grinding-wheel 23is,also ro`-` tated. Simultaneously the gear 29 is rotated, and byreason of the eccentric contacting the bfurcated end of thegrinding-wheel frame such frame is caused to vibrate or rock up anddown, so that the grinding-wheel as it rotates has a rocking orvibrating movement in an arc of a circle whose center is the stud 10.

When it is desired to use the machine for ordinary grinding-work or whenfor any reason it is desired that the grinding-wheel frame shall bestationary, the thumb-nut 32 is loosened and the gear-wheel 29 movedbackward, the teeth engaging the locating-tooth 34 on 'the arm 33, afterwhich the nut 32 is tightened, thereby also locking such frame in anyadjusted position. The position of the grinding-wheel frame with respectto the standard 9 is adjustable by virtue of the slotted arm 14, whoseadjustable movements are communicated to the other arm 15, and therebyto the gear-wheel 29 and its cam, whereby the axis of such gear-wheelisraised or lowered. The arc described by the grindingwheel frame maythus be adjusted higher or lower to suit requirements. As this framedescends the coiled springis somewhat compressed, and on furthermovement of the parts the spring tends to raise this frame and relievethe machine and its operator of a continual lift. The knife-bar isinserted in the holder-frame, so that the angle or point between the twoadjacent knife-sections is in the same vertical plane as the central orhighest point of the grinding-wheel, as seen in Fig. 2. The clamp 51 isthen screwed inward and bears against the knife-bar. To accommodate athick or thin bar or any size of head on a knife-bar the pin 53 may beplaced in the proper hole in the plate 52. The base-plate 37 isadjustable to proper position to or from the wheel, according as l[heknife-sections are either long or short, and is then clamped. rlhe arm14 is adjustable, so that the grinding-wheel in its vibration will grindthe entire cuttingedge of the sections, and the setscrew 46 is alsoadjusted to regulate and limit. the forward tipping of the holder-frameto prevent dubbing or rounding off of the sicklesections. After beingthus properly adj usted perfect work is always assured, howeverinexperienced the operator may be.

When the machine is used for general grinding purposes, thegrinding-wheel frame is arranged not to vibrate by taking the gear 29out of mesh, and such frame can be adjusted to the desired height oraltitude by adjusting the arm 14 on the stationary standard 9,orsuchgear-wheel after being taken out of mesh may be turned and then lockedon the locatingtooth. The grinding-wheel may thus be readily adjusted togrind low or high or at any intermediate point. If the gearwheel istaken out of mesh when the eccentric is at a position to vibrate theframe to its highest altitude, the frame will be held high and held IIOGele-e low if such gear-wheel is adjusted when the frame is at itslowest position. The grinding-wheel shown may be readily removed in themanner before stated and the grinding-wheel of the desired shape orstyle substituted.

Although I have described more or less precise forms and details ofconstruction, I do not intend to be understood as limiting myselfthereto, as lcontemplate changesin form, the proportion of parts, andthe substitution of equivalents, as circumstances may suggest or renderexpedient and without departing from the spirit of my invention.

l claimm l. 'A grinding-machine comprising a pivoted frame, agrinding-wheel therein, an eccentric for vibrating such frame, anadjustable frame in which the eccentric is mounted and means foroperating the grinding-Wheel and the eccentric.

2. A grinding-machine comprising a support, a frame pivoted therein, agrindingwheel in suoli frame, an eccentric for vibrating such frame, asecond frame adjustable on such support, said eccentric being adjustablymounted in said adjustable frame and means for operating thegrinding-wheel and the eccentric.

3. A grinding-machine comprisingastandard or support, a stud mountedtherein, a grinding-wheel frame pivot-ally mounted on said stud, agrinding-wheel journaled in such frame, a bracket or frame also mountedfor rotary adjustment upon said stud, an eccentric carried by saidbracket and arranged to engage said grinding-wheel frame for rocking thesame about said stud, and a drivegear mounted on said stud and adaptedto actuate said grinding-wheel and eccentric.

4. A grinding-machine comprising a standard," a stud mounted therein, agrindingwheel fra me pivotally mounted on the stud, a grinding-wheeljournaled in such frame, a bracket also mounted on said stud andprovided with a lng, means connected to said frame arranged to engagesaid lug for locking said frame against movement and a main drive-gearfor actuating said grinding-Wheel.

5. A grinding-machine comprising a main stud, a frame pivotally mountedthereon and carrying a grinder, a slotted bracket also mounted on saidstud, a short stud adjustably mounted in the slot of said bracket andcarrying an eccentric, said eccentric arranged to engage said frame,anda drive-gear mounted on said main stud and arranged to actuate saidgrinder and eccentric.

C. Agrinding-machinecomprisingavibrating grinding-wheel frame, agrinding-wheel therein, means for vibrating the frame and rotating thewheel and means for changing the posit-ion or altitude of the arcdescribed by the frame in its vibrations without affecting the extent ofvibration.

7. A gririding-machine comprising a grinding-wheel, a pivoted framecarrying i he wheel at one end and having an extended portion at theother end beyond the pivotal point, an eccentric cooperating with suchextended portion to vibrate such frame, and a frame carrying sucheccentric and adjustable in position to vary the position of the arc ofvibration.

S. A grinding device comprising a vibrating grinding-wheel frame, agrinding-wheel therein, mechanism for vibrating the frame, adriving-wheel operating said mechanism and simultaneouslyrotating thegrinding- Wheel and means for throwing said mechanism out of operationand simultaneously locking the same.

9. A grinding-machine comprisinga stud, a frame pivotally mountedthereon and carrying a grinder, a bracket also mounted on said stud,means carried by said bracket and arranged to engage such frame, adrive-gear mounted on said stud and adapted to rotate said grinder, andmeans for rotarily adjusting said bracket on said stud.

lO. A grinding-machine comprising a pivotally-monnied and vibratableframe carrying a grinder, a bracket mounted for angular adj ustment withreference to the pivotal axis of said frame and carrying an eccentricarranged to engage said frame, and a drive-gear mounted concentric with.said axis and arranged to actuate said `grinder and eccentric.

l1. A grinding-machine comprising a stud, a grinder-frame and a bracketmounted on the stud, a grinder in such frame, an eccentric carried bysaid'bracket and arranged to vibrate said frame upon the stud, a maindrive-gear for rotating said grinder and actuating said eccentric, and aspring arranged to oppose the action of said eccentric in one direction.

l2. A grinding machine comprising a standard or support, a stud mountedtherein, a rotatable grinding-wheel, a frame pivoted on said stud,carrying at one end the grinding-Wheel and having a bifurcated armextending beyond its pivotal point, an eccentric located between thebifurcations of said arm and adapted to vibrate the frame, a gear- Wheelactuating said eccentric, means for removing it from mesh with itsdriving-pinion to prevent vibration ofthe frame and a main drivinggearwheel adapted to rotate the grinding-wheel and having a pinion toaci nate the eccentric-actuating gear-Wheel.

13. A grinigling-machine comprising a pivoted frame, a grinding-wheeltherein, mechanism for vibrating such frame, an adjustable frame inwhich such mechanism is mounted and means for operating saidgrindingwheel and said mechanism.

14. A grinding-machine comprising a standard or support, a stud mountedin said standard, a grinding-wln-el, a frame pivoted on thc stud andcarrying the grinding-wheel at one end and having an extension on itsopposite end beyond its pivotal point, a bell-crankshaped lever pivotedon the stud, one arm be- IOO IIO

ing substantially horizontal and projecting parallel to said extensionof the frame, such arm having a longitudinal slot, a stud adjustable insaid slot, an eccentric mounted on such adjustable stud and adriving-wheel for simultaneously rotating the grinding-wheel and theeccentric to vibrate the frame.

15. Agrinding-machinecomprisingastandard or support, a stud mountedtherein, a grinding-Wheel, a frame pivoted on the stud and carrying thegrinding-wheel at one end and having an extension on its opposite endbeyond its pivotal point, a bell-crank-shaped frame pivoted on said studand adjustable with respect to the standard, an eccentric journaled inone of the arms of the bell-crankshaped frame and adapted to contactsaid eX- tension of the grinding-wheel frame to vibrate the same andmeans for rotating the grinding-wheel and for rotating the eccentric tovibrate the grinding-wheel frame.

16. Agrinding-machinecomprisingastandard or support, a stud mountedtherein, a rotatable grinding-wheel, a frame pivoted on the stud andcarrying the grinding-wheel at one end and having an extension on itsopposite end beyond its pivotal point, abellcrank-shaped frame pivotedon said stud and having one of the arms thereof projecting downwardadjacent to said standard and provided with a slot, a clamping-boltpassing. throughthe standard and received by said slot to hold saidbell-crank-shaped frame in adjusted positions, the other arm thereof eX-tending rearwardly substantially horizontal and provided with a slot, astud adjustable in said last-named slot, a gear-Wheel provided with aneccentric and mounted on said last-named stud, such eccentric contactingsaid extension of the grinding-Wheel frame, a main driving-gear rotatingthe grindingwheel, and a pinion intermediate such driving gear-wheel andthe eccentric-provided gear-wheel.

17. Agrinding-machinecomprisingastandard or support, a stud mountedtherein, a rotatable grinding-wheel, a frame pivoted on the stud andcarrying the grinding-wheel at one end and having a bifurcated extensionon its opposite end beyond its pivotal point, an arm mounted on saidstud and extending rearwardly, a gear-wheel,an eccentric thereonembraced by said bifurcated extension to vibrate the grinding-wheelframe, a stud for said gear-wheel and adjustably mounted in said arm, adriving-wheel rotating the grinding-wheel and having a pinion meshingwith said gear-wheel and a projection on said arm to engage in and locksaid gear-wheel when adjusted out of mesh.

g 18. A grinding-machine comprising a base, a vibrating grinding-wheelframe mounted thereon and l.raving a bifurcated extension, an eccentrict braced by such extension and having astud, a bracket arranged on thebase and having a slot .in which the stud is adj ustably secured,driving mechanism for operating said eccentric, and a lug or tooth onsaid bracket adapted to engage the eccentric when adj usted out ofoperation with the driving mechanism, whereby the eccentric is held indifferent positions to adjust and hold the frame from vibrating and atdiierent altitudes.

19. Agrinding-machinecomprisingastandard orsuppo'rt, a stud mountedtherein, a rotatable grinding-Wheel, a frame pivoted on the stud andcarrying the grinding-wheel at one end and having a bifurcatedextension, an arm extending rearwardly from said stud and having itsextreme end turned at an angle and there provided with a rib or lug, astud or spindle adjustably mounted on' said arm, a gear-wheel mounted onsaid spindle, an eccentric thereon embraced by said bifurcatedextension, and a driving-Wheel rotating the grinding-Wheel and having apinion meshing with said gear-wheel to rotate the same and cause theeccentric to rock the grinding- Wheel frame.

20. A grinding-machine comprising a vibrating frame, a grinding-wheelrotatably mounted therein, a pinion for such wheel, a drivegear forvibrating such frame and for rotating such wheel through its pinion, anda flywheel also driven by the gear by engagement therewith at a point onthe said gear substantially diametrically opposite the point where thegrinding-wheel pinion meshes.

2l. Agrinding-machine'comprising a vibrating frame, a grinding-Wheelrotatably mounted therein and having a pinion, a iiy-Wheel having apinion, a driving gear-wheel having teeth engaging said pinions torotate said grinding-wheel and the fly-Wheel, such pinions meshing withsaid gear on opposite sides thereof, and a connection between saiddriving-gear and said grinding-wheel frame to vibrate such frame. p

22. Agrinding-machinecomprisingastandard, a vibrating frame mountedthereon, a grinding wheel rotatably mounted in said frame and havingapinion, an arm connected with the standard and extending rearwardly, ajournal in the extreme end of such arm, a iiy-wheel having a shaftmounted in such journal, a pinion on saidv shaft, a gear-wheel having ancccen tric and mounted in said arm, such eccentric contacting the frameto vibrate it, a main driving gear-wheel meshing with said pinions atits opposite sides and having a pinion meshing with saideccentricprovided gear-Wheel. j

23. A grinding-machine comprising a base, a vibrating frame mountedthereon, a grinding-wheel rotatably mounted in such frame, an eccentriccontacting said frame to vibrate it, a .bracket providing a bearing forthe eccentric and having a journal at its end, a shaft bearing in suchjournal and having a fly-wheel, and a wheel driving the grindingwheel,eccentric and iiy-Wheel.

24:. A grinding-machine comprising a base having upwardly-projectingbearing-lugs, a

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grinding-Wheel rotatably7 supported thereon, means for rotating suchwheel and a Workholder comprising a frame having downwardly-projectingbearinglugs cooperating with the lugs of said base, one of said lugs onthe frame extended below its pivotal point and a set-screw in said baseengaging such extended portion and a rotatable clam p screwing throughthe frame and against the Work in such frame.

25. A grinding-machine comprisinga pivoted frame, a grinding-wheeltherein, a bracket, an eccentric adjustably mounted in such bracket andarranged to engage said frame and vibrate it and means for operating thegrinding-wheel and the eccentric.

26. A grindingmachine comprising a vibrating grinding-Wheel frame, arotatable grinding-Wheel therein, an eccentric for vibrating said frame,mechanism for rotating the eccentric and means whereby the eccentric maybe shifted ont of operation and locked in different positions t-o holdthe frame stationary and at different altitudes.

27. A grinding-machine comprising a vibrating frame, means for varyingthe position of are of the 'rames vibration, a grinding-Wheel rotatablein such frame and having a pinion, a fly-Wheel having a pinion andadjust-able simultaneously With said vibrating frame and a drive-wheelrotating said pinions Which mesh upon its opposite sides.

28. In a g1indngmachine,the combination of a supporting-frame, a driver,a journal pivoted on the frame, a fly-Wheel mounted therein and drivenby such driver, such journal and fiy-wheel being adjustable With respectt0 the driver and in the arc of a circle with the frame as a center.

JAMES MACPHAIL.

